Manufacturing and laying bituminous paving.



UNITED STATES PATENT OFFICE.

JOSEPH HAY AMIES, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 0F ONE-HALF '10 CHARLES F. TAYLOR, OF PHILADELPHIA, PENNSYLVANIA.

MANUFACTURING AND LAYING BITUMINOUS PAVING.

No Drawing.

To all whom it may concern:

Be it known that I, JOSEPH HAY AMIEs, a citizen of the United States, residing in Philadelphia, in the county of Philadelphia and Stateof Pennslyvania, have invented a certain new and useful Method of Manufacturing and Laying Bituminous Paving, of which the following is a specification.

The principal object of the present invention is to construct a bituminous paving wherein the mastic used in constructin such pavings is mixed without the application of heat.

A further object of the present invention is to provide a mastic that. may be readily prepared at the place where the paving is to be laid, thus decreasing the cost of manufacture and at the same time enhancing the' convenience of the operation.

A still further object of the present invention is to provide a mastic comprising sand or other mineral matters and pulverized hard asphalt combined with a flux consisting of asphalt oil and crude petroleum mixed in a cold state.

- Other objects will appear hereinafter.

In practicing my invention, use is made of any of the well known forms of foundations and the bituminous paving to be laid thereon, may be readily mixed at the place to be paledin a cold state. The mastic comprising the paving of my invention may be preferably mixed in a standard pug mill but when more convenient, can be readily and cheaply accomplished by hand labor. A due amount of sand 01' other mineral materials together with a due amount of flux preferably consisting of asphalt oil and crude petroleum in proportions of about one part oil and two parts petroleum are readily mixed together without the employment of heat or in other words, the materials are mixed in a cold state. To readily effect the mixing process I may mix asphalt oil with a desired amount of gasolene or naphtha by which mixing the gasolene cuts the asphalt oil, in which condition it readily becomes intimate with the crude oil. I now immediately mix the above described flux with the mineral materials and then mix in a due amount of pulverized hard asphalt and Specification of Letters Patent.

Patented Jan. 4, 1910.

Application filed March 31, 1908. Serial No. 424,344.

when intimately mixed as above described, are placed upon the foundation present upon .the street or road to be paved in a cold state,

and leveled oif in any Well known manner as by raking. If desired, the. mastic may remain loose and uncompressed for a convenient time before rolling. Heat is then applied in any convenient way, preferably by means of a heated roller, though I may use a surface heater or hot tampers if desired, or any other convenient means. When thus heated I roll the paving to grade in the usual way, and in addition thereto, apply to the warm surface a desirable finish of sand or' screenings preferably heated.

Instead of using crude oil and asphalt oil, I may use gas tar or rosin oil, separately or together, or any other suitable fluxing oil, and instead of using hard asphalt, I may use hard distilled gas tar, or other tar, or hard pitch or stillbottom which are hard and dry enough to admit of pulverization.

It will be readily seen that in cases where great strength and hardness are not required, the above described mastic may be laid and rolled without applying heat in any manner.

The benefit derived from gasolene or naphtha in the mixing process in addition to causing the asphalt oil and crude petroleum to become instantly intimate, is twofold :First, itv enables me to use a smaller quantity of flux with a larger quantity of hard asphalt than could otherwise be done and secondly,the asphalt or naphtha quickly macerates the hard asphalt and secures its intimacy with the fluxing oils. It is of course understood that gasolene or naphtha being volatile oils, readily evaporate after accomplishing their-purpose which is advantageous.

The above described method of constructing a paving laid in a cold state and carbonized by heat on account of its simplicity, convenience and approximately low cost, provides a paving commercially valuable.

What I claim is:

The herein described method of making a composition for paving and the like which consists in mixing a fiuxing oil with crude petroleum oil, then reducing these oils with gasolene and the like then mixing this combination of elements While in a cold state with mineral materials, then adding thereto and mixing therewith pulverized hard bitumen, then placing the resulting composition upon a foundation and then applying heat thereto substantially as described.

In testimony whereof I have hereunto signed my name.

JOSEPH HAY AMIES.

Witnesses:

WV. J. J nonson, M. E. EAs'rLAoK. 

